Two Stop Bits | Submissions from righto.com

A tricky Commodore PET repair: tracking down 6 1/2 bad chips (tutorial diagbostics 6502 eprom ghidra logicanalyzer petscii) (righto.com)
1 point by bmonkey325 30 days ago | discuss
A USB interface to the "Mother of All Demos" keyset (2025) (usb keyset interface engelbart demo retro) (righto.com | ia)
4 points by bmonkey325 51 days ago | discuss
The Pentium contains a complicated circuit to multiply by three (2025) (righto.com)
5 points by Sidneys1 71 days ago | discuss
Two bits per transistor: high-density ROM in Intel's 8087 floating point chip (historical intel 8087 fpu reversing) (righto.com)
1 point by bmonkey325 77 days ago | discuss
The origin and unexpected evolution of the word "mainframe" (2025) (historical mainframe ibm 701 architecture etymology) (righto.com | ia)
3 points by bmonkey325 100 days ago | discuss
Pi in the Pentium: reverse-engineering the constants in its floating-point unit (mathematics pi pentium reversing floating point extraction) (righto.com)
1 point by bmonkey325 127 days ago | discuss
Intel's $475 million error: the silicon behind the Pentium division bug (historical intel pentium fdiv bug oops) (righto.com | ia)
3 points by bmonkey325 135 days ago | discuss
Reverse-engineering precision op amps from a 1969 analog computer (reversing analog computer 60s) (righto.com | ia)
1 point by bmonkey325 138 days ago | discuss
Antenna diodes in the Pentium processor (antennae pentium power management) (righto.com | ia)
1 point by bmonkey325 170 days ago | discuss
The Pentium as a Navajo Weaving (righto.com | ia)
7 points by jordanpascal 253 days ago | 1 comment
Inside an IBM/Motorola mainframe controller chip from 1981 (1980s ibm mainframe motorola keystone chip s370) (righto.com | ia)
2 points by bmonkey325 300 days ago | discuss
Standard cells: Looking at individual gates in the Pentium processor (intel pentium design review reversing bicmos) (righto.com | ia)
3 points by bmonkey325 309 days ago | discuss
Inside an unusual 7400-series chip implemented with a gate array (7400) (righto.com | ia)
2 points by jgrahamc 409 days ago | discuss
The first microcomputer: The transfluxor-powered Arma Micro Computer from 1962 (historical micro computing aerospace transfluxor 1960s) (righto.com | ia)
3 points by bmonkey325 428 days ago | discuss
Inside the mechanical Bendix Air Data Computer, part 3: pressure transducers (bendix) (righto.com | ia)
2 points by jgrahamc 482 days ago | 1 comment
Iconic consoles of the IBM System/360 mainframes, 55 years old (ibm 360 mainframes vintage) (righto.com | ia)
3 points by bmonkey325 493 days ago | discuss
Reverse-engineering the classic MK4116 16-kilobit DRAM chip (historical dram memory reversing) (righto.com | ia)
3 points by bmonkey325 506 days ago | discuss
The transparent chip inside a vintage Hewlett-Packard floppy drive (historical hp floppy storage z80 iee488) (righto.com | ia)
6 points by bmonkey325 509 days ago | discuss
Reverse engineering the Intel 386 processor's register cell (intel 386) (righto.com | ia)
3 points by jgrahamc 551 days ago | discuss
Reverse-engineering Ethernet backoff on the Intel 82586 network chip's die (righto.com | ia)
5 points by zdw 560 days ago | discuss
Examining the silicon dies of the Intel 386 processor (cpu 386 intel) (righto.com | ia)
6 points by nickt 563 days ago | discuss
Examining the silicon dies of the Intel 386 processor (intel 386) (righto.com | ia)
3 points by jgrahamc 577 days ago | discuss
12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe (ibm 1401) (righto.com | ia)
1 point by jgrahamc 582 days ago | discuss
Undocumented 8086 instructions, explained by the microcode (8086) (righto.com | ia)
3 points by jgrahamc 582 days ago | discuss
Reverse-Engineering the Mechanical Bendix Central Air Data Computer (bendix) (righto.com | ia)
1 point by jgrahamc 582 days ago | discuss